Across
- 2. artery carrying oxygen-poor blood from the heart to the lungs
- 3. beat of the heart as felt through the walls of the arteries
- 5. gas (waste) released by body cells, transported via veins to the heart, and then to the lungs for exhalation
- 8. smallest blood artery
- 10. upper chamber of the heart
- 11. small artery
- 13. small vein
- 14. thin-walled vessel that carries blood from body tissues and lungs back to the heart
- 15. lower chamber of the heart
Down
- 1. located between the right atrium and the right ventricle
- 4. valve between the left atrium and the left ventricle
- 6. double layer membrane surrounding the heart
- 7. relaxation phase of the heartbeat
- 9. largest artery in the body
- 12. gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells.